Can someone please identify this vacuum relay/switch. It has three ports and lives on the firewall just to the left of the distributor. The two paired vacuum lines are connected, one to the intake manifold, the second to what I believe is the vacuum servo which operates the secondaries of the carburetor.

The real question is the unconnected single port on the right side of the this relay/switch, is it supposed to connect somewhere or remain closed off?

Thanks for any help . . .

        - - - Dave in S.C. CA

 

what year?
auto or man?
check the manual or vacuum routing label under the hood?

Sorry for the missing information . . . 87 Samurai JK Tintop, manual tranny, 1.3L  stock. The hood sticker does not show a terminated vacuum port which leads me to not knowing exactly what this thing is. If the single tube is removed the engine sputters (vacuum leak is created). put it back on and it is normal. I''m inclined just to leave it be . . . and move on the installation of the rebuilt carburetor and temp the CA smog check again. But it does seem strange to have this plugged port, perhaps it is for factory testing or something. I have not found anything in my Chilton's manual either.

Thanks for your help.

      - - - Dave in S.C. CA

So basically you are saying everything is fine until you pull it off.
Well, my solution is, "don't pull it off".
It could be an advance for the auto trans, a diagnostics port, or sometimes car manufacturers buy generic valves for cheap and they have an extra port they just plug them.

There should be a vacuum diagram on your hood.

Can someone please identify this vacuum relay/switch. It has three ports and lives on the firewall just to the left of the distributor. The two paired vacuum lines are connected, one to the intake manifold, the second to what I believe is the vacuum servo which operates the secondaries of the carburetor.

The real question is the unconnected single port on the right side of the this relay/switch, is it supposed to connect somewhere or remain closed off?

Thanks for any help . . .

        - - - Dave in S.C. CA

What Year?  What model??

Quote from: MX5ZUKIWRX on July 23, 2009, 07:23:04 AM

Can someone please identify this vacuum relay/switch. It has three ports and lives on the firewall just to the left of the distributor. The two paired vacuum lines are connected, one to the intake manifold, the second to what I believe is the vacuum servo which operates the secondaries of the carburetor.

The real question is the unconnected single port on the right side of the this relay/switch, is it supposed to connect somewhere or remain closed off?

Thanks for any help . . .

        - - - Dave in S.C. CA

What Year?  What model??

Too funny.
http://www.zukiworld.com/forum/index.php?topic=25790.msg211208#msg211208

Quote from: ack on July 24, 2009, 12:50:58 PM

Quote from: MX5ZUKIWRX on July 23, 2009, 07:23:04 AM

Can someone please identify this vacuum relay/switch. It has three ports and lives on the firewall just to the left of the distributor. The two paired vacuum lines are connected, one to the intake manifold, the second to what I believe is the vacuum servo which operates the secondaries of the carburetor.

The real question is the unconnected single port on the right side of the this relay/switch, is it supposed to connect somewhere or remain closed off?

Thanks for any help . . .

        - - - Dave in S.C. CA

What Year?  What model??

Too funny.
http://www.zukiworld.com/forum/index.php?topic=25790.msg211208#msg211208

AND THE WINNER OF THE STUPID POST OF THE WEEK AWARD IS....


ME!

(Ack steps up to the podium...)

Oh this is SOOOO Wonderful!  I'd like to thank my mom, Dell Computers, The kid down the street with the lemonade stand, Natalie at YouTube's communitychannel, George for the replacement '87 Transmission, Microsoft,  Home Depot, James Hardie & Company, and all the little people who helped made it happen!  Really! They are 4 inches tall! Thank you! Thank you very much! (music plays me off stage...)

ack . . . In all fairness . . .

Ask a stupid question . . . Get a more stupid answer . . .

      - - - Dave